my two kids go to school in Harvey Mi at cherry Creek Elementary. I am there father. And i want to know how much school they have missed 2011 to 2012

My two kids go to Cherry Creek school in Harvey MI. I want to find out how much school they have missed from 2011 to 2012. I am there father and i am concerned about it. I would like to have the scheduled times when they have school and dont have school. And most of all the times they have missed. I am concerned that they have missed to much school, But im always told they have the day off. and not knowing if this is true or not.